Lighting Circuits

Each lighting circuit has particular operating characteristics based on its purpose and the system design. Knowing how a circuit is designed to operate and how it interacts with other related circuits will help you to better know how to go about diagnosing the system. A typical lighting circuit may be made up of the battery, fuses or circuit breakers, switches, relays, lamps, and wiring to connect the components. Manufacturers design the circuits to operate in specific ways and then create schematics or wiring diagrams, which are a diagrammatic layout of the entire circuit to assist in the repair and maintenance of lighting circuits. Learning how to read wiring diagrams takes time and practice. Understanding circuit design, operation, and wiring diagram information can then be used to diagnose circuit faults.